[VOL-4211] Persist meters in the Core

Change-Id: I0f9a2914996a69be080bd8f77b3c7ae6cc902cb3
diff --git a/rw_core/core/device/logical_manager.go b/rw_core/core/device/logical_manager.go
index c43ecdb..26021ca 100644
--- a/rw_core/core/device/logical_manager.go
+++ b/rw_core/core/device/logical_manager.go
@@ -512,7 +512,7 @@
 	if agent == nil {
 		return nil, status.Errorf(codes.NotFound, "%s", id.Id)
 	}
-	meters := agent.listLogicalDeviceMeters()
+	meters := agent.listLogicalDeviceMeters(ctx)
 	ctr, ret := 0, make([]*openflow_13.OfpMeterEntry, len(meters))
 	for _, meter := range meters {
 		ret[ctr] = meter